Using this G - Shock watch is a breeze. To turn on the Full Auto LED, just tilt your wrist in low - light areas and the light will automatically come on. When setting the time, you can use the buttons on the side of the watch to adjust the hours, minutes, and other settings. As for wearing it, simply use the push clasp to fasten it around your wrist. When it comes to maintenance, avoid hitting the watch against hard objects as it can damage the stainless - steel case or the mineral glass. If the watch gets wet, dry it with a soft cloth. The tough solar feature means it charges in natural or artificial light, but try to expose it to sunlight occasionally for a full charge. Also, if you're going to be in water for a long time, check the water resistance regularly to ensure it's still working properly.